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Zend Framework: Zend_Db_Table Column Alias Map Component Proposal

Proposed Component Name Zend_Db_Table Column Alias Map
Developer Notes Column Alias Map
Proposers Fernando Chucre
Zend Liaison TBD
Revision 1.0 - 30 July 2008: Initial Draft. (wiki revision: 4)

Table of Contents

1. Overview

Many ORM needs map name of column difent of attribute name of object. Now in the Zend_Db_Table_Row_Abstract it isn't possible. Many developer implements a Zend_Db_Table_Row_Abstract class to make it, and many times these implementation is not good and not produtive. This component make it a way vary simple.

2. References

  • Metadata Mapping
  • Zend_Db_Table_Abstract
  • Zend_Db_Table_Row_Abstract
  • Zend_Db_Table_Rowset_Abstract

3. Component Requirements, Constraints, and Acceptance Criteria

  • This component will map real column name with different attribute name
  • This component will use the method Zend_Db_Table_Row_Abstrac::_transformColumn to make this possible.
  • This component will not change signatures of component.

4. Dependencies on Other Framework Components

  • Zend_Exception
  • Zend_Db_Table_Abstract
  • Zend_Db_Table_Row_Abstract
  • Zend_Db_Table_Rowset_Abstract
  • Zend_Db_Table_Select_Abstract

5. Theory of Operation

The component will continue to operate when called using the method signature. And will provide a new attribute in Zend_Db_Table_Abstract class called$_columnMap. This attribute is an array. The component will provide 4 new methods. A usualy case fallowing. The $_columnMap is a assossiative array and will be like this:

Then package Zend_Db_Table will provide complete translation in all operations, since get and set to translation in clause where in Zend_Db_Select.

6. Milestones / Tasks

  • Milestone 1: design notes will be published here
  • Milestone 2: Working prototype checked into the incubator supporting use cases #1, #2
  • Milestone 4: Unit tests exist, work, and are checked into SVN.
  • Milestone 5: Initial documentation exists.

7. Class Index

  • Zend_Db_Table_Abstract
  • Zend_Db_Table_Row_Abstract
  • Zend_Db_Table_Rowset_Abstract

8. Use Cases


Map column by the attribute call $_columnMap.

Table Person:

Using get and set.


Using column translation in $where(Zend_Db_Select_Abstract)

9. Class Skeletons




zend_db_table zend_db_table Delete
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  1. Feb 05, 2011

    <p>Archiving this proposal, feel free to recover it when you want to work on it again. For more details see <a href="">this email</a>.</p>